CHEYENNE, Wyo. (AP) — Tuesday marked the start of a six-month enrollment period for health insurance offered through a federal exchange.

Five things to know about getting health insurance in Wyoming:

FEDERAL GOVERNMENT RUNS EXCHANGE: Wyoming is one of 36 states that opted to have the federal government operate an Internet marketplace to help people compare health insurance plans before they choose one.

ENROLLMENT IS OPEN: Customers can go to http://www.healthcare.gov to start enrolling on Oct. 1 with coverage scheduled to be available by Jan. 1, 2014. Enrollment is open until March 31, 2014.

TWO COMPANIES: Blue Cross Blue Shield of Wyoming and WINhealth are offering insurance coverage through the federal exchange in Wyoming.

WYOMING PREMIUMS HIGH: The cost of coverage in Wyoming will be among the highest in the country. Officials say costs are higher because Wyoming, which has only about 560,000 people, is the least populated state.

TAX CREDITS AVAILABLE: The exchange site will allow citizens to enter personal financial information to determine whether they’re eligible for federal tax credits to offset the cost of coverage. Stephen K. Goldstone, president and CEO WINhealth, said Tuesday there are about 84,000 uninsured people in the state. He said up to 70 percent of them might be eligible for some level of subsidy.